MDK: hash update, Wine 1.6.2

1.6.2 may be fixing some bugs with GOG installer? (#3735)
Sacred Gold: hash update

1.6.2, 1.7.15 are slower than 1.5.15 for this game
Specially noticeable when moving, zoomed out
System Shock 2: Wine 1.6.2

1.6.2 may be fixing some bugs with GOG installer? (#3735)